Agreement Between Magnitude of Perfusion Deficit Quantified by Semiautomated Approach on CT-MPI and Automated Assessment of TPD by SPECT-MPI

(A) Similarity of magnitude of perfusion deficit on stress CT-MPI and SPECT-MPI–derived stress total perfusion deficit (TPD) in 30 patients. The 95% Bland-Altman limits of agreement (−8.4 to 9.5) are represented by dashed lines. (B) Similarity of magnitude of perfusion deficit on rest CT-MPI and SPECT-MPI–derived rest TPD in 18 patients. The 95% Bland-Altman limits of agreement (−5.1 to 4.7) are represented by dashed lines. (C) Similarity of magnitude of ischemic perfusion deficit by CT-MPI and SPECT-MPI–derived ischemic TPD in 18 patients. The 95% Bland-Altman limits of agreement (−7.6 to 10.2) are represented by dashed lines. Abbreviations as in Figure 1.